DATA MODEL

CONTENT

• Definition of Data Model
• Levels of Data Models
• Types of Data Models

Data Model

Data models serve as foundational constructs for introducing abstraction in a Database Management System (DBMS). They play a crucial role in defining the interconnections of data and the methods by which data is processed and stored within the system. A data model serves as an abstract framework that organizes data elements and standardizes their relationships, both among themselves and with real-world entities’ properties. For example, a data model might dictate that a data element representing an automobile should consist of various components that represent aspects such as the car’s color, size, and owner.

Levels of Data Models

The ANSI/SPARC three-level architecture classifies data models into three distinct levels:

1. Conceptual Data Model

The conceptual data model offers a technology-independent specification of the data to be housed in the database. This level primarily facilitates communication between data modelers and business stakeholders. Typically presented as a diagram with accompanying documentation, it provides a high-level view of the data’s structure and relationships.

2.